rmi connection refused if not 1099

[YungSheng Chang]

I believe somebody else meets this too, but I couldn't find related post.
To start rmi server programatically, I use LocateRegistry.createRegistry(portNum);
my code:
LocateRegistry.createRegistry(1099);
Hello h = new Hello("Steve");
Naming.rebind("TEST",h);
Everything works successfully for 1099(including client calling the method), however, if the port is not 1099, let's say 1098, the following exception occures at Naming.rebind.
I am using java version 1.4.2_01. Thank you for the advice!!
Exception in thread "main" java.rmi.ConnectException: Connection refused to hos
: 10.40.194.54; nested exception is:
java.net.ConnectException: Connection refused: connect
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(Unknown Source)
at sun.rmi.transport.tcp.TCPChannel.createConnection(Unknown Source)
at sun.rmi.transport.tcp.TCPChannel.newConnection(Unknown Source)
at sun.rmi.server.UnicastRef.newCall(Unknown Source)
at sun.rmi.registry.RegistryImpl_Stub.rebind(Unknown Source)
at java.rmi.Naming.rebind(Unknown Source)
at Test.main(Test.java:13)
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(Unknown Source)
at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(Unknown
ource)
at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(Unknown
ource)
... 7 more

[Ken Krebs]

YungSheng,
The code you show creates a new registry but uses the default registry, not the new one.
After creating the registry, you have to get a reference to it and then use it to perform the binding as in the following example:

LocateRegistry.createRegistry(port);
Registry registry = LocateRegistry.getRegistry(port);
registry.rebind(SERVICES_NAME, remoteServices);

[Jim Yingst]

The createRegistry() method does have a return value, for precisely this purpose:

Registry registry = LocateRegistry.createRegistry(port);
registry.rebind(SERVICES_NAME, remoteServices);

[YungSheng Chang]

Yes, it works, thank you all.
In fact, we were taught to use network socket to write project in school. That may be quite different from you guys. Well I have to say RMI is more straightforward though.
Yap, if you ever implement the "network whiteboard" project, we may go to the same school.